铝颗粒的燃烧细节决定着推进剂的性能。应用Fick第一定律及Fourier定律,对燃烧颗粒中各组分气体的质量与能量扩散过程进行计算,跟踪氧化反应中生成的中间态产物,总结了颗粒尺寸及组分随燃烧时间的变化规律,以及颗粒的燃烧效率等。结果表明,颗粒燃烧初期,反应进行的较为强烈,约60ms后,燃烧趋于平稳,最终,颗粒20%以上的外表面被氧化物所覆盖。

The aluminum droplet's burning detail is important for propellant capability. Based on Fick's first law and Fourier law, the mass and energy diffusion process between gases produced by burning aluminum droplet was computed. Following the track of the intermediate product, the development of droplet's size, component, and combustion efficiency were studied. Results show that in early process, the reaction is more intense. After 60 ms, the burning becomes placid. Finally, about 20% of the droplet surface is covered by the oxide cap.